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Last name Ruengsin (Ruengsin ) , all over the world, is a very rare family name. The cognomen Ruengsin is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Ruengsin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruengsin | Thailand |
Urai, Aumruthai, Nattaya, Sorossana, Rungruedee, and Petcharaporn